$OpenBSD: patch-CMakeLists_txt,v 1.8 2015/10/21 19:51:28 jturner Exp $
--- CMakeLists.txt.orig	Fri Aug  7 18:56:23 2015
+++ CMakeLists.txt	Thu Oct 15 17:57:00 2015
@@ -77,7 +77,7 @@ if (UNIX)
 
 	# warnings as errors:
 	# we have a problem with people checking in code with warnings.
-	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
 
 	if (NOT APPLE)
 		set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
@@ -103,7 +103,7 @@ if (UNIX)
 	check_include_files(strings.h HAVE_STRINGS_H)
 	check_include_files(string.h HAVE_STRING_H)
 	check_include_files(sys/select.h HAVE_SYS_SELECT_H)
-	check_include_files(sys/socket.h HAVE_SYS_SOCKET_H)
+	check_include_files("sys/types.h;sys/socket.h" HAVE_SYS_SOCKET_H)
 	check_include_files(sys/stat.h HAVE_SYS_STAT_H)
 	check_include_files(sys/time.h HAVE_SYS_TIME_H)
 	check_include_files(sys/utsname.h HAVE_SYS_UTSNAME_H)
@@ -114,7 +114,6 @@ if (UNIX)
 	check_function_exists(gmtime_r HAVE_GMTIME_R)
 	check_function_exists(nanosleep HAVE_NANOSLEEP)
 	check_function_exists(poll HAVE_POLL)
-	check_function_exists(sigwait HAVE_POSIX_SIGWAIT)
 	check_function_exists(strftime HAVE_STRFTIME)
 	check_function_exists(vsnprintf HAVE_VSNPRINTF)
 	check_function_exists(inet_aton HAVE_INET_ATON)
@@ -157,6 +156,8 @@ if (UNIX)
 		message(FATAL_ERROR "Missing library: pthread")
 	endif()
 
+	check_library_exists("pthread" sigwait "" HAVE_POSIX_SIGWAIT)
+
 	# curl is used on both Linux and Mac
 	find_package(CURL)
 	if (CURL_FOUND)
@@ -201,77 +202,59 @@ if (UNIX)
 
 	else() # not-apple
 
-		# add include dir for bsd (posix uses /usr/include/)
-		set(CMAKE_INCLUDE_PATH "${CMAKE_INCLUDE_PATH}:/usr/local/include")
+		find_package(X11 REQUIRED)
 
-		set(XKBlib "X11/Xlib.h;X11/XKBlib.h")
-		check_symbol_exists("XRRNotifyEvent" "${XKBlib};X11/extensions/Xrandr.h" HAVE_X11_EXTENSIONS_XRANDR_H)
+		include_directories(${X11_X11_INCLUDE_PATH})
+		list(APPEND libs ${X11_X11_LIB})
 
-		check_include_files("${XKBlib};X11/extensions/dpms.h" HAVE_X11_EXTENSIONS_DPMS_H)
-		check_include_files("X11/extensions/Xinerama.h" HAVE_X11_EXTENSIONS_XINERAMA_H)
-		check_include_files("${XKBlib};X11/extensions/XKBstr.h" HAVE_X11_EXTENSIONS_XKBSTR_H)
-		check_include_files("X11/extensions/XKB.h" HAVE_XKB_EXTENSION)
-		check_include_files("X11/extensions/XTest.h" HAVE_X11_EXTENSIONS_XTEST_H)
-		check_include_files("${XKBlib}" HAVE_X11_XKBLIB_H)
-		check_include_files("X11/extensions/XInput2.h" HAVE_XI2)
-
-		if (HAVE_X11_EXTENSIONS_DPMS_H)
-			# Assume that function prototypes declared, when include exists.
-			set(HAVE_DPMS_PROTOTYPES 1)
+		if(X11_Xkb_FOUND)
+			set(HAVE_X11_EXTENSIONS_XKBSTR_H 1)
+			set(HAVE_XKB_EXTENSION 1)
+			set(HAVE_X11_XKBLIB_H 1)
+		else()
+			message(FATAL_ERROR "Xkb is needed")
 		endif()
 
-		if (NOT HAVE_X11_XKBLIB_H)
-			message(FATAL_ERROR "Missing header: " ${XKBlib})
+		if(X11_XTest_FOUND)
+			set(HAVE_X11_EXTENSIONS_XTEST_H 1)
+			list(APPEND libs ${X11_XTest_LIB})
+		else()
+			message(FATAL_ERROR "XTest is needed")
 		endif()
 
-		check_library_exists("SM;ICE" IceConnectionNumber "" HAVE_ICE)
-		check_library_exists("Xext;X11" DPMSQueryExtension "" HAVE_Xext)
-		check_library_exists("Xtst;Xext;X11" XTestQueryExtension "" HAVE_Xtst)
-		check_library_exists("Xinerama" XineramaQueryExtension "" HAVE_Xinerama)
-		check_library_exists("Xi" XISelectEvents "" HAVE_Xi)
-		check_library_exists("Xrandr" XRRQueryExtension "" HAVE_Xrandr)
-
-		if (HAVE_ICE)
-
-			# Assume we have SM if we have ICE.
-			set(HAVE_SM 1)
-			list(APPEND libs SM ICE)
-
+		if(X11_ICE_FOUND)
+			list(APPEND libs ${X11_SM_LIB})
+			list(APPEND libs ${X11_ICE_LIB})
 		endif()
 
-		if (HAVE_Xtst)
-
-			# Xtxt depends on X11.
-			set(HAVE_X11)
-			list(APPEND libs Xtst X11)
-
-		else()
-
-			message(FATAL_ERROR "Missing library: Xtst")
-
+		if(X11_dpms_FOUND)
+			set(HAVE_X11_EXTENSIONS_DPMS_H 1)
+			set(HAVE_DPMS_PROTOTYPES 1)
+			list(APPEND libs ${X11_Xext_LIB})
 		endif()
 
 		if (HAVE_Xext)
 			list(APPEND libs Xext)
 		endif()
 
-		if (HAVE_Xinerama)
-			list(APPEND libs Xinerama)
-		else (HAVE_Xinerama)
-			if (HAVE_X11_EXTENSIONS_XINERAMA_H)
-				set(HAVE_X11_EXTENSIONS_XINERAMA_H 0)
-				message(WARNING "Old Xinerama implementation detected, disabled")
-			endif()
+		if(X11_Xinerama_FOUND)
+			set(HAVE_X11_EXTENSIONS_XINERAMA_H 1)
+			list(APPEND libs ${X11_Xinerama_LIB})
 		endif()
 
-		if (HAVE_Xrandr)
-			list(APPEND libs Xrandr)
+		if(X11_Xinput_FOUND)
+			set(HAVE_XI2 1)
+			list(APPEND libs ${X11_Xinput_LIB})
 		endif()
-		
-		# this was outside of the linux scope,
-		# not sure why, moving it back inside.
-		if(HAVE_Xi)
-			list(APPEND libs Xi)
+
+		if(X11_Xrandr_FOUND)
+			set(HAVE_X11_EXTENSIONS_XRANDR_H 1)
+			list(APPEND libs ${X11_Xrandr_LIB})
+		endif()
+	
+		if (CMAKE_SYSTEM_NAME MATCHES "OpenBSD")
+			include_directories(${OPENBSD_LOCALBASE}/include)
+			link_directories(${OPENBSD_LOCALBASE}/lib)
 		endif()
 
 	endif()
